Road users have had speed limits imposed before they could even measure mpg. Blokes with red flags in real early days and the 30 mph limit in 1935...or 4..
Whatever the reason for its intriduction is not worth arguing about, in reality it was no doubt a combination of all mentioned and for government to be seen to behaving proactively.
But as I, ve said before its probably more important than ever for all reasons mentioned..
And yes a Tesla could brake from 90 in similar time to an Anglia from 50 but so what?, driver must react in both. An Anglia with a safe driver is way safer than a Tesla with an idiot.
And
From Google
And
I think flecc is mixing the two events... We are all getting older.